Index: firmware/App/Modes/ModeChemicalDisinfect.c
===================================================================
diff -u -r516edef640ad7c42b2d0fb09a3499d44a8b6f35b -r713052663335c4402f29a87853802c1b7db0d583
--- firmware/App/Modes/ModeChemicalDisinfect.c	(.../ModeChemicalDisinfect.c)	(revision 516edef640ad7c42b2d0fb09a3499d44a8b6f35b)
+++ firmware/App/Modes/ModeChemicalDisinfect.c	(.../ModeChemicalDisinfect.c)	(revision 713052663335c4402f29a87853802c1b7db0d583)
@@ -469,7 +469,7 @@
 
     if ( FALSE == isAlarmActive( ALARM_ID_DG_CHEM_DISINFECT_INSERT_ACID ) )
     {
-        if ( STATE_CLOSED == getSwitchStatus( CONCENTRATE_CAP ) )
+        if ( ( STATE_CLOSED == getSwitchStatus( CONCENTRATE_CAP ) ) || ( STATE_OPEN == getSwitchStatus( DIALYSATE_CAP ) ) )
         {
             activateAlarmNoData( ALARM_ID_DG_CHEM_DISINFECT_INSERT_ACID );
         }